论文标题
在ganymede上的全球沟渠系统，表明它们在一次影响事件中的创建
A global system of furrows on Ganymede indicative of their creation in a single impact event
论文作者
论文摘要
犁沟是构造槽的同心系统，并且是甘木接受的最古老的可识别表面特征。我们分析了利用Voyager和Galileo图像的犁沟的分布，发现在Ganymede的表面上犁沟是全球同心圆形结构的一部分。如果这种多环结构是影响起源，那么这是迄今为止在太阳系中确定的最大影响结构。犁沟的形状与同心的偏差无处不在，这意味着即使在明亮的地形形成期间，在整个Ganymede表面上黑暗地形块的相对位置也不会发生明显变化。撞击器大小的估计很困难，但是150 km-radius撞击器与观察到的犁沟的特性一致。犁沟形成的影响应该对卫星的地质和内部进化产生重大影响，这将通过木星的冰冷月亮（例如果汁（木星冰上的月亮探险者）或欧罗巴快船任务）来确认这一点。
Furrows are a concentric system of tectonic troughs, and are the oldest recognizable surface feature on Ganymede. We analyzed the distribution of furrows utilizing Voyager and Galileo images and found that furrows over Ganymede's surface are part of a global concentric circular structure. If this multi-ring structure is impact origin, this is the largest impact structure identified so far in the solar system. Deviations of the shapes of the furrows from the concentricity are small everywhere, which implies that the relative location of the blocks of the dark terrains over the entire surface of Ganymede has not changed appreciably even during formation of the bright terrains. The estimate of the impactor size is difficult, but an 150km-radius impactor is consistent with the observed properties of furrows. The furrow-forming impact should have significant effects on the satellite's geological and internal evolution, which are expected to be confirmed by future explorations of Jupiter's icy moons, such as the JUICE (Jupiter Icy moon Explorer) or Europa Clipper mission.
